The United Opposition (Greek: Ηνωμένη Αντιπολίτευσις) was a coalition of anti-Venizelist Greek political parties for the elections of 1920.
Its main leader was Dimitrios Gounaris. Members to the coalition were:
People's Party
Kyriakoulis Mavromichalis' party National party
Nikolaos Stratos' party Reform party
Modernist party
and other small right-wing and anti-Venizelist parties